Need suggestions

I also had the brake rattle. It was a higher pitched rattle than what's coming from is probably the sway bar.
What was causing the brake rattle on mine is someone put the GD brake pads in on the right side without using the shims. A new hardware kit fixed that.
 
I have what I can only describe as a low pitched muffled rattle in the front of my 02 LS 3.9L. When I bought the car the guy told me he had the control arms and ball joints replaced at all four corners and gave me receipts for it.
It sounds like a bad bushing when you go over rough road or badly done manhole covers. It doesn't do it over smooth road. I've personally had the front lowers & ball joints, fronts struts and strut mounts now replaced with new trying to get rid of it and most of the rest of the suspension components look like they're in decent shape. What could cause that "bad bushing" noise normally and alternatively? Could engine or tranny mounts cause that kind of noise? The sway bar? Some kind of components mounted in the enginge compartment or inside the fenders? It's driving me nuts and I can't seem to find anyone knowledgeable enough to tell me definitively what it is.

Can anyone here give me suggestions on what might cause it? I'm sick of throwing money at it and crossing my fingers.
Front away bars? Can you grease them or are they closed?
 
OEM end links are non-greasable. Greasable ones are available (Moog).

The OEM sway bar busings don't have grease fittings. However... (some of this was deleted) aftermarket urethane bushings with grease fittings are available... but need "stop collars to prevent lateral movement.

In the end my recommendation was to buy a new OEM sway bar (using the VIN #) and installing the new bar.

Luna priced the bar at around $140.

Someone else suggested to check the bar by unbolting the end links and see if the bar moves (up and down) freely... which would be a good indicator that the bushings had separated from the bar.

I am curious how this worked out.
 

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